ergonomics. [ male announcer ] tempur-pedic. the most highly recommended bed in america. [ female announcer ] for more information or to find a retailer near you, visit tempurpedic.com. >>> politics is all about words, and when it comes to debates, many time words are the best weapons candidates have. here's cnn's john berman. >> wolf, it was the great political operative, william shakespeare, who once asked, what's in a name? a rose by any other name would smell as sweet. well, in political campaigns, everything's in a name, or a word. and frankly, some smell awful. if you listen to the republicans, president obama doesn't merely support government, but -- >> big government. >> old government. >> barack obama's government-centered society. >> reporter: and if you listen to the democrats, mitt romney doesn't want medicare reform, he wants -- >> a plan called voucher care! >> a voucher program in order to pay for tax cuts. voucherize medicare. >> reporter: these are no mere word games. these are word bombs. and make no mistake, t